Charging truck for coking furnance

ABSTRACT

A charging truck particularly for charging coke to a coking furnace comprising a body portion which is adapted to be moved over the ground or over a rail structure and which carries a plurality of coal bunkers having outlets with extensions which are lowerable over the outer cases of a coking furnace and wherein the lowermost ends of the extendable portions are interconnected by means of flexible pipe connections between adjacent bunker outlets.

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Inventor Johannes Knappstein Recklinghausen, Germany Appl. No. 843,085

Filed July 18, 1969 Patented Oct. 19, 1971 Assignee Firma Carl StillRecklinghausen, Germany CHARGING TRUCK FOR COKING FURNANCE 8 Claims, 2Drawing Figs.

US. Cl 214/35 R,

202/263, 214/18 PH Int. Cl Cl0b 31/04 Field of Search 214/18, 18

[56] References Cited UNITED STATES PATENTS 2,057,125 10/1936 Wilson202/263 3,435,596 4/1969 Hornung 214/18 PH Primary ExaminerR0bert G.Sheridan Attorney-McGlew and Toren ABSTRACT: A charging truckparticularly for charging coke to a coking furnace comprising a bodyportion which is adapted to be moved over the ground or over a railstructure and which carries a plurality of coal bunkers having outletswith extensions which are lowerable over the outer cases of a cokingfurnace and wherein the lowermost ends of the ex tendable portions areinterconnected by means of flexible pipe connections between adjacentbunker outlets CHARGING TRUCK FOR COKING FURNANCIE SUMMARY OF THEINVENTION This invention relates in general to accessory devices forcoking furnaces and in particular to a new and useful charging truckincluding a body carrying a plurality of bunkers having lowermost endswith extensible portions which are interconnected by flexible pipeconnections.

Charging trucks for charging coking coal into the coking chambers ofcoke furnaces are known which include bunkers having outlets of asmaller diameter than the outer casing of the furnace chambers intowhich they are to be positioned for charging purposes. The outlets ofthe bunkers are surrounded by telescopic jacket pipes which are loweredinto the outer case frame and which prevent the escape of charging gasesfrom the cases of the coking furnaces. All the jacket pipes of thecharging truck are connected with a collecting tank or collecting pipefor the charging gases and the collected charging gases are burnt orwashed before they are released to the atmosphere. The wash waters aretreated and then used again. During the charging operation the variousouter cases of the furnace are in communication with each other not onlyfrom the interior of the furnace chamber but also from the exterior ofthe chamber through the jacket pipes.

When this complicated exhaust system with jacket pipes arranged aroundthe outlets is not provided, but instead the charging gases areexhausted into the riser and the receiver of the coking system, there isno second connection of the outer cases with each other outside of thechamber. The outlet sockets of the charging bunkers have the same insidediameter as the outer cases and during the charging operation theyattach onto the outer case frames. Such a construction has adisadvantage that the coke fills into the inside chamber in the form ofa pouring cone which extends to a considerable height so that thesecones block the communication of the gas collector space of the furnacechamber from one charging case to another, so that it becomes separatedinto several compartments. This can happen when fine coal enters thefurnace chamber and forms a dense curtain or veil which is notsufficiently permeable to gas to affect a pressure equalization. In themost unfavorable situation the zone of the gas collector space of anouter case is separated from that of the two adjacent outer cases. Aregular escape and withdrawal of the charging gases can then no longertake place and despite the arrangement of the sealing devices betweenthe outer case frame and the bunker outlet charging gases will escapefrom the sealing point because the overpressure in the chamber is sohigh that the seal is no longer effective.

In accordance with the present invention there is provided a chargingtruck having a plurality of bunkers with lower outlet portions which areinterconnected by flexible connecting lines adjacent the outer ends atthe location of the connection of the ends to the cases of the cokingfurnace. The flexibility of these connecting lines permits theindividual lifting of each bunker or a lower extensible portion thereofeither collectively or successively.

The collecting means of the bunkers can be equipped at the ends facingthe riser with a slide valve and an easily detachable flexibleconnection with which it may be connected to a socket of the riser.There would then be a double connection during the charging operation tothe riser once through the furnace chamber and also through thecollecting pipe.

The connecting pipes are preferably designed so that any coal which hasentered into them will drop automatically ,back into the bunker outlet.The sockets of the connecting pipes at the bunker outlet extendobliquely upwardly and they are joined by pipe bends or acute angledpipe sections, for example, by welding. The two outer bunker outletseach have a connection to the adjoining outlets. The inner ones havetwo, one to each adjoining outlet. When a collecting pipe is provided,only one connection socket for each bunker outlet is provided.

Accordingly, it is an object of the invention to provide a chargingtruck construction having a body supporting a plurality of bunkers, thebunkers having lowermost discharge ends which are connected together byflexible pipe connections.

A further object of the invention is to provide a charging truckconstruction for coking furnaces which is simple in design, rugged inconstruction and economical to manufacture.

The various features of novelty which characterize the invention arepointed rout with particularity in the claims annexed to and forming apart of this specification. For a better understanding of the invention,its operating advantages and specific objects attained by its use,reference should be had to the accompanying drawings and descriptivematter in which there is illustrated and described a preferredembodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWING In the Drawings:

FIG. I is a partial schematic vertical sectional and partial elevationalview of the roof of a horizontal coke furnace battery having a chargingtruck thereon and with the bin outlets interconnected by flexible pipesas constructed in accordance with the invention, and

FIG. 2 is a view similar to FIG. 1 of another embodiment of theinvention wherein the bins are interconnected with the up take through acollecting main.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to thedrawings in particular, the invention embodied therein comprises acoking furnace having a chamber roof 1 with a plurality of outer cases2. A riser opening 3 is also defined in the roof I and it connects intoa riser 4 having a bend 5 which leads into a large receiver 6. The endsof the roof 1 include supporting beams or stands 7, one of which carriesa bracket 8 which supports the receiver 6.

In accordance with the invention the roof I is provided with a railstructure or trackway 9 for supporting the wheels 10 of a charging truckgenerally designated 50.

The charging truck 50 includes spaced beam portions 11 which carry thewheels 10 and which depend from a body portion 12. The body portionsupports a plurality of coal bunkers or charging chutes 13 which arearranged in spaced relationship on the body at a spacing correspondingto the spacing of the outer cases 2. The bunkers are charged with coalthrough charging openings 14 at the top thereof. Each bunker includes anoutlet cone or an extensible portion 24, the outermost ones beingdesignated 24a. A rotary slide valve I8 is associated with eachextensible portion 24 for opening and closing the discharge at the lowerend of the extensible portion 24. The valve 18 is operated through anelongated link 16 which is connected to a handle portion 17 and moved bya rotatable control member 15.

Each extensible portion 24 includes a cone 23 which may be oriented intoa cone receiver 25 of each outer case 2 of the furnace. After the truckis positioned to overlie the cases 2 the extensible portions 24, 24a arelowered into the associated case by means of a lowering mechanism whichincludes a link 22 connected to a crossmember 52 which supports eachlower extensible portion 24. The crossmember 52 is guided by means ofguide sleeves 54 and it may be raised or lowered by actuating a linkmember 21 which is pivoted on a support 19 and which is moved by thecontrol of a fluid pressure cylinder 20.

In accordance with a feature of the invention each bunker outlet at thelower end of the extensible portions 24 and 24a carriesa pipe socket 26,the innermost ones 24 carrying a socket 26 on each side and theoutermost ones carrying a socket only on the inboard side. The socketsof adjoining bunker outlets are connected with each other by flexiblepipe members 27. This interconnection of all of the outlets of adjacentbunkers insures the equalization of the pressure between the sections ofthe gas collector space of the furnace chamber during the chargingoperation so that this connection will not be interrupted, for example,by piled up coal cones accumulating within the furnace chamber. The pipeconnections 27 are long enough to permit relative movement of theextensible portions of adjacent bunkers without interference.

In contrast to FIG. I, all bin outlets 24, 24a in FIG. 2 have only onesocket 26 which is connected with the flexible pipe 270, which in turnopens into the collecting main 55. In order to increase the mobility, atelescopic pipe connection 56, comparable to a stuffing box, is arrangedin the pipe 270. The horizontal collecting main 55 passes over theentire hopper car and it carries at its end facing the uptake aconnecting piece 61 which can be displaced by the lever system 57, 58and 59 along with the stuffing box 60 which is connected with the socket62 of the uptake 4. In this way the bin outlets are always connectedwith each other and with the uptake, so that pressure differences can beequalized at any time.

What is claimed is:

l. A charging truck for supplying coal to a plurality of cases of a cokefurnace, comprising a body portion adapted to be positioned over thecases of the coke furnace, a plurality of bunkers on said body portioneach having a lower portion with an outlet alignable with a respectivecase for the discharge of coal into the furnace therethrough, sealingmeans associated with each bunker outlet to seal the associated outletagainst flow therethrough, and flexible conduit means interconnectingthe outlets of all of said bunkers for equalizing the pressuretherebetween.

2. A charging truck, according to claim 1, wherein said flexible conduitmeans comprises a socket on the outlet of each of said bunkers and apipeline interconnecting said sockets of all said bunkers.

3. A charging truck for supplying coal to a plurality of cases of a cokefurnace, comprising a body portion adapted to be positioned over thecases of the coke furnace, a plurality of bunkers on said body portioneach having a lower portion with an outlet aligned with a respectivecase for the discharge of coal into the furnace therethrough, sealingmeans associated with each bunker outlet to seal the associated outletagainst flow therethrough, a collecting main, and pipeline meansconnected between said collecting main and each of said bunker outlets.

4. A charging truck, according to claim 1, wherein said flexible conduitmeans includes a socket on each of said bunker outlets, said sockethaving a detachable connection, and flexible pipes interconnecting saiddetachable connection of all said bunkers.

5. A charging truck, according to claim 1, wherein said bunkers includean upper portion, the lower portion being movable and extensiblerelative to said upper portion, and means mounting said lower portionfor extension and retraction in respect to said upper portion.

6. A charging truck, according to claim 5, wherein said sealing meansincludes a rotary slide valve carried by said lower extensible portionfor opening and closing the outlet thereof, said flexible conduit meansbeing connected to each lower portion below the associated slide valve.

7. A charging truck, according to claim 6, wherein said body portion hasa plurality of spaced supporting beams, wheels carried by saidsupporting beams being adapted to ride over a trackway, and a trackwaylocated above the roof of a coking furnace for supporting and guidingsaid wheels.

8. A charging truck, according to claim 3, including an outlet riserassociated with said coke furnace, said collecting main being connectedto said outlet riser.

1. A charging truck for supplying coal to a plurality of cases of a cokefurnace, comprising a body portion adapted to be positioned over thecases of the coke furnace, a plurality of bunkers on said body portioneach having a lower portion with an outlet alignable with a respectivecase for the discharge of coal into the furnace therethrough, sealingmeans associated with each bunker outlet to seal the associated outletagainst flow therethrough, and flexible conduit means interconnectingthe outlets of all of said bunkers for equalizing the pressuretherebetween.
 2. A charging truck, according to claim 1, wherein saidflexible conduit means comprises a socket on the outlet of each of saidbunkers and a pipeline interconnecting said sockets of all said bunkers.3. A charging truck for supplying coal to a plurality of cases of a cokefurnace, comprising a body portion adapted to be positioned over thecases of the coke furnace, a plurality of bunkers on said body portioneach having a lower portion with an outlet aligned with a respectivecase for the discharge of coal into the furnace therethrough, sealingmeans associated with each bunker outlet to seal the associated outletagainst flow therethrough, a collecting main, and pipeline meansconnected between said collecting main and each of said bunker outlets.4. A charging truck, according to claim 1, wherein said flexible conduitmeans includes a socket on each of said bunker outlets, said sockethaving a detachable connection, and flexible pipes interconnecting saiddetachable connection of all said bunkers.
 5. A charging truck,according to claim 1, wherein said bunkers include an upper portion, thelower portion being movable and extensible relative to said upperportion, and means mounting said lower portion for extension andretraction in respect to said upper portion.
 6. A charging truck,according to claim 5, wherein said sealing means includes a rotary slidevalve carried by said lower extensible portion for opening and closingthe outlet thereof, said flexible conduit means being connected to eachlower portion below the associated slide valve.
 7. A charging truck,according to claim 6, wherein said body portion has a plurality ofspaced supporting beams, wheels carried by said supporting beams beingadapted to ride over a trackway, and a trackway located above the roofof a coking furnace for supporting and guiding said wheels.
 8. Acharging truck, according to claim 3, including an outlet riserassociated with said coke furnace, said collecting main being connectedto said outlet riser.